Prosthetic limb to be controlled by microchip

"Smart" legs - entire smart lower limbs - to replace those amputated from
tens of thousands of Americans yearly as a result of auto accidents,
diabetes, or other causes are expected to be on the market in two years. 

http://www.sandia.gov/media/NewsRel/NR2000/smartleg.htm
http://unisci.com/stories/20004/1019006.htm